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. 1987 Sep;169(9):3982-7.
doi: 10.1128/jb.169.9.3982-3987.1987.

Characterization of 2,3-dihydroxybenzoic acid from Nocardia asteroides GUH-2

G J Feistner, B L Beaman

Characterization of 2,3-dihydroxybenzoic acid from Nocardia asteroides GUH-2

G J Feistner et al. J Bacteriol. 1987 Sep.

Abstract

Culture filtrates of virulent Nocardia asteroides GUH-2 after growth in acetate minimal medium displayed an absorbance maximum at 320 nm. After isolation by polyamide extraction and anion chromatography, a UV-active compound with this absorbance was shown to be 2,3-dihydroxybenzoic acid (DHB) by nuclear magnetic resonance, gas chromatographic, and mass spectrometric techniques. DHB production under several culture conditions was quantified by a standard high-pressure liquid chromatography assay. Under iron deficiency conditions, N. asteroides GUH-2 excreted up to 11 mg of DHB per liter into the culture medium. No DHB was detected when N. asteroides GUH-2 was grown in an iron-rich medium. With the less virulent strain N. asteroides 10905, DHB was not found under any condition tested.

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